UNITEDSTATES
SECURITIESANDEXCHANGECOMMISSION
Washington,D.C.20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-08573

Name of Fund: BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Anne F. Ackerley, Chief Executive Officer, BlackRock
MuniHoldings California Quality Fund, Inc., 55 East 52^nd Street, New York, NY 10055

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 07/31/2011

Date of reporting period: 10/31/2010

Item 1 – Schedule of Investments

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Schedule of Investments October 31, 2010 (Unaudited)

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)
(Percentages shown are based on Net Assets)

 

 

Portfolio Abbreviations

To simplify the listings of portfolio holdings in the Schedule of Investments, the names and descriptions of many of the securities have been abbreviated
according to the following list:

 

BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC.

OCTOBER 31, 2010

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Schedule of Investments(continued)

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)
(Percentages shown are based on Net Assets)

 

 

2 BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC.

OCTOBER 31, 2010

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Schedule of Investments(continued)

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)
(Percentages shown are based on Net Assets)

 

 

BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC.

OCTOBER 31, 2010

3

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Schedule of Investments(continued)

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

(Percentages shown are based on Net Assets)

 

 

________________________________________________________________________________________________________________________________________________________________________________________________________________________
* The cost and unrealized appreciation (depreciation) of investments as of
October 31, 2010, as computed for federal income tax purposes, were
as follows:

 

(a) Represents a zero-coupon bond. Rate shown reflects the current yield as
of report date.
(b) Securities represent bonds transferred to a tender option bond trust in
exchange for which the Fund acquired residual interest certificates.
These securities serve as collateral in a financing transaction.

4 BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC.

OCTOBER 31, 2010

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Schedule of Investments(concluded)

BlackRock MuniHoldings California Quality Fund, Inc. (MUC)

(c) Investments in companies considered to be an affiliate of the Fund during
the period, for purposes of Section 2(a)(3) of the Investment Company Act
of 1940, as amended, were as follows:

 

(d) Represents the current yield as of report date.

• For Fund compliance purposes, the Fund’s sector classifications refer to any
one or more of the sector sub-classifications used by one or more widely
recognized market indexes or rating group indexes, and/or as defined by
Fund management. This definition may not apply for purposes of this report,
which may combine such sector sub-classifications for reporting ease.

•Fair Value Measurements - Various inputs are used in determining the fair
value of investments, which are as follows:

•Level 1 — price quotations in active markets/exchanges for identical assets
and liabilities

•Level 2 — other observable inputs (including, but not limited to: quoted
prices for similar assets or liabilities in markets that are active, quoted
prices for identical or similar assets or liabilities in markets that are not
active, inputs other than quoted prices that are observable for the assets or
liabilities (such as interest rates, yield curves, volatilities, prepayment
speeds, loss severities, credit risks and default rates) or other market-
corroborated inputs)

•Level 3 — unobservable inputs based on the best information available in
the circumstances, to the extent observable inputs are not available
(including the Fund's own assumptions used in determining the fair value of
investments)

The inputs or methodologies used for valuing securities are not necessarily an
indication of the risk associated with investing in those securities. For
information about the Fund's policy regarding valuation of investments and
other significant accounting policies, please refer to the Fund’s most recent
financial statements as contained in its annual report.

The following table summarizes the inputs used as of October 31, 2010 in
determining the fair valuation of the Fund's investments:

 

¹See above Schedule of Investments for values in each sector.

BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC.

OCTOBER 31, 2010

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Item 2 – Controls and Procedures

2(a) – The registrant's principal executive and principal financial officers or persons performing
similar functions have concluded that the registrant's disclosure controls and procedures (as
defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the
31940 Act3)) areeffective as of a date within 90 days of the filing of this report based on the
evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act
and Rule 13a-15(b) under the Securities Exchange Act of 1934, as amended.

2(b) – There were no changes in the registrant's internal control over financial reporting (as defined
in Rule 30a-3(d) under the 1940 Act) that occurred during the registrant's last fiscal quarter
that have materially affected, or are reasonably likely to materially affect, the registrant's
internal control over financial reporting.

Item 3 – Exhibits

Certifications – Attached hereto

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment
Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by
the undersigned, thereunto duly authorized.

BlackRock MuniHoldings California Quality Fund, Inc.

By: /s/ Anne F. Ackerley
Anne F. Ackerley
Chief Executive Officer of
BlackRock MuniHoldings California Quality Fund, Inc.

Date: December 22, 2010

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment
Company Act of 1940, this report has been signed below by the following persons on behalf
of the registrant and in the capacities and on the dates indicated.

By: /s/ Anne F. Ackerley
Anne F. Ackerley
Chief Executive Officer (principal executive officer) of
BlackRock MuniHoldings California Quality Fund, Inc.

Date: December 22, 2010

By: /s/ Neal J. Andrews
Neal J. Andrews
Chief Financial Officer (principal financial officer) of
BlackRock MuniHoldings California Quality Fund, Inc.

Date: December 22, 2010

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